﻿<?phpclass mysql { private $db_host; //数据库主机 private $db_user; //数据库用户名 private $db_pwd; //数据库用户名密码 private $db_database; //数据库名 private $conn; //数据库连接标识; private $result; //执行query命令的结果资源标识 private $sql; //sql执行语句 private $row; //返回的条目数 private $coding; //数据库编码，GBK,UTF8,gb2312 private $bulletin = true; //是否开启错误记录 private $show_error = true; //测试阶段，显示所有错误,具有安全隐患,默认关闭 private $is_error = false; //发现错误是否立即终止,默认true,建议不启用，因为当有问题时用户什么也看不到是很苦恼的
 public function __construct($db_host = 'localhost', $db_user = 'root', $db_pwd = 'root', $db_database ='thtf_eng', $conn = '', $coding = 'UTF8') {  $this->db_host = $db_host;  $this->db_user = $db_user;  $this->db_pwd = $db_pwd;  $this->db_database = $db_database;  $this->conn = $conn;  $this->coding = $coding;  $this->connect(); }  public function connect() {  if ($this->conn == "pconn") {   //永久链接   $this->conn = mysql_pconnect($this->db_host, $this->db_user, $this->db_pwd);  } else {   //即时链接   $this->conn = mysql_connect($this->db_host, $this->db_user, $this->db_pwd);  }
  if (!mysql_select_db($this->db_database, $this->conn)) {   if ($this->show_error) {    $this->show_error("数据库不可用：", $this->db_database);   }  }  mysql_query("SET NAMES '$this->coding'"); }
 public function query($sql) {  if ($sql == "") {   $this->show_error("SQL语句错误：", "SQL查询语句为空");  }  $this->sql = $sql;  $result = mysql_query($this->sql, $this->conn);  if (!$result) {   //调试中使用，sql语句出错时会自动打印出来   if ($this->show_error) {    $this->show_error("错误SQL语句：->".mysql_error(), $this->sql);   }  } else {   $this->result = $result;  }  return $this->result; }
 public function create_database($database_name) {  $database = $database_name;  $sqlDatabase = 'create database ' . $database;  $this->query($sqlDatabase); }
 //将系统数据库与用户数据库分开，更直观的显示？ public function show_databases() {  $this->query("show databases");  echo "现有数据库：" . $amount = $this->db_num_rows();  echo "<br />";  $i = 1;  while ($row = $this->fetch_array()) {   echo "$i $row[Database]";   echo "<br />";   $i++;  } }
 //以数组形式返回主机中所有数据库名 public function databases() {  $rsPtr = mysql_list_dbs($this->conn);  $i = 0;  $cnt = mysql_num_rows($rsPtr);  while ($i < $cnt) {   $rs[] = mysql_db_name($rsPtr, $i);   $i++;  }  return $rs; }
 public function show_tables($database_name) {  $this->query("show tables");  echo "现有数据表：" . $amount = $this->db_num_rows();  echo "<br />";  $i = 1;  while ($row = $this->fetch_array()) {   $columnName = "Tables_in_" . $database_name;   echo "$i $row[$columnName]";   echo "<br />";   $i++;  } }
 /* FIXME: what's this function mean??? */ public function mysql_result_li($str, $value) {  return mysql_result($str, $value); } /* fetch_array() function to get more result */ public function fetch_array() {  return mysql_fetch_array($this->result); }
 //获取关联数组,使用$row['字段名'] public function fetch_assoc() {  return mysql_fetch_assoc($this->result); } //获取数字索引数组,使用$row[0],$row[1],$row[2] public function fetch_row() {  return mysql_fetch_row($this->result); }
 //获取对象数组,使用$row->content public function fetch_Object() {  return mysql_fetch_object($this->result); }
 //简化查询select public function findall($table) {  $this->query("SELECT * FROM $table"); }
 //简化查询select public function select($table, $columnName = "*", $condition = '', $debug = '') {  $condition = $condition ? ' Where ' . $condition : NULL;  if ($debug) {   echo "SELECT $columnName FROM $table $condition";  } else {   $this->query("SELECT $columnName FROM $table $condition");  } }
 //简化删除del public function delete($table, $condition, $url = '') {  if ($this->query("DELETE FROM $table WHERE $condition")) {   if (!empty ($url))    $this->Get_admin_msg($url, '删除成功！');  } }
 //简化插入insert public function insert($table, $columnName, $value, $url = '') {  if ($this->query("INSERT INTO $table ($columnName) VALUES ($value)")) {   if (!empty ($url))    $this->Get_admin_msg($url, '添加成功！');  } }
 //简化修改update public function update($table, $mod_content, $condition, $url = '') {  if ($this->query("UPDATE $table SET $mod_content WHERE $condition")) {   if (!empty ($url))    $this->Get_admin_msg($url, '数据更新成功!');  } }
 public function insert_id() {  return mysql_insert_id(); } //指向确定的一条数据记录 public function db_data_seek($id) {  if ($id > 0) {   $id = $id -1;  }  if (!@ mysql_data_seek($this->result, $id)) {   $this->show_error("SQL语句有误：", "指定的数据为空");  }  return $this->result; }
 // 根据select查询结果计算结果集条数 public function db_num_rows() {  if ($this->result == null) {   if ($this->show_error) {    $this->show_error("SQL语句错误", "暂时为空，没有任何内容！");   }  } else {   return mysql_num_rows($this->result);  } }
 // 根据insert,update,delete执行结果取得影响行数 public function db_affected_rows() {  return mysql_affected_rows(); }
 //输出显示sql语句 public function show_error($message = "", $sql = "") {  if (!$sql) {   echo "<font color='red'>" . $message . "</font>";   echo "<br />";  } else {   echo "<fieldset>";   echo "<legend>错误信息提示:</legend><br />";   echo "<div style='font-size:14px; clear:both; font-family:Verdana, Arial, Helvetica, sans-serif;'>";   echo "<div style='height:20px; background:#000000; border:1px #000000 solid'>";   echo "<font color='white'>错误号：12142</font>";   echo "</div><br />";   echo "错误原因：" . mysql_error() . "<br /><br />";   echo "<div style='height:20px; background:#FF0000; border:1px #FF0000 solid'>";   echo "<font color='white'>" . $message . "</font>";   echo "</div>";   echo "<font color='red'><pre>" . $sql . "</pre></font>";   $ip = $this->getip();   if ($this->bulletin) {    $time = date("Y-m-d H:i:s");    $message = $message . "\r\n$this->sql" . "\r\n客户IP:$ip" . "\r\n时间 :$time" . "\r\n\r\n";    $server_date = date("Y-m-d");    $filename = $server_date . ".txt";    $file_path = "error/" . $filename;    $error_content = $message;    $file = "error"; //设置文件保存目录
    //建立文件夹    if (!file_exists($file)) {     if (!mkdir($file, 0777)) {      //默认的 mode 是 0777，意味着最大可能的访问权      die("upload files directory does not exist and creation failed");     }    }    //建立txt日期文件    if (!file_exists($file_path)) {     //echo "建立日期文件";     fopen($file_path, "w+");     //首先要确定文件存在并且可写     if (is_writable($file_path)) {      //使用添加模式打开$filename，文件指针将会在文件的开头      if (!$handle = fopen($file_path, 'a')) {       echo "不能打开文件 $filename";       exit;      }
      //将$somecontent写入到我们打开的文件中。      if (!fwrite($handle, $error_content)) {       echo "不能写入到文件 $filename";       exit;      }      echo "——错误记录被保存到! ".$filename;      //关闭文件      fclose($handle);     } else {      echo "文件 ".$filename." 不可写";     }    } else {     //首先要确定文件存在并且可写     if (is_writable($file_path)) {      //使用添加模式打开$filename，文件指针将会在文件的开头      if (!$handle = fopen($file_path, 'a')) {       echo "不能打开文件 ".$filename;       exit;      }
      //将$somecontent写入到我们打开的文件中。      if (!fwrite($handle, $error_content)) {       echo "不能写入到文件 ".$filename;       exit;      }      //echo "文件 $filename 写入成功";      echo "——错误记录被保存!".$filename;      //关闭文件      fclose($handle);     } else {      echo "文件 ".$filename." 不可写";     }    }   }   echo "<br />";   if ($this->is_error) {    exit;   }  }  echo "</div>";  echo "</fieldset>";  echo "<br />"; }
 //释放结果集 public function free() {  @ mysql_free_result($this->result); } //数据库选择 public function select_db($db_database) {  return mysql_select_db($db_database); }
 //查询字段数量 public function num_fields($table_name) {  //return mysql_num_fields($this->result);  $this->query("select * from $table_name");  echo "<br />";  echo "字段数：" . $total = mysql_num_fields($this->result);  echo "<pre>";  for ($i = 0; $i < $total; $i++) {   print_r(mysql_fetch_field($this->result, $i));  }  echo "</pre>";  echo "<br />"; }
 //取得 MySQL 服务器信息 public function mysql_server($num = '') {  switch ($num) {   case 1 :    return mysql_get_server_info(); //MySQL 服务器信息    break;   case 2 :    return mysql_get_host_info(); //取得 MySQL 主机信息    break;   case 3 :    return mysql_get_client_info(); //取得 MySQL 客户端信息    break;   case 4 :    return mysql_get_proto_info(); //取得 MySQL 协议信息    break;   default :    return mysql_get_client_info(); //默认取得mysql版本信息  } } //析构函数，自动关闭数据库,垃圾回收机制 public function __destruct() {  if (!empty ($this->result)) {   $this->free();  }  mysql_close($this->conn);
 } //function __destruct();
 // close mysql connection  public function close() {  if (!empty ($this->result)) {   $this->free();  }  mysql_close($this->conn); }
 function getip() {  if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) {   $ip = getenv("HTTP_CLIENT_IP");  } else   if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) {    $ip = getenv("HTTP_X_FORWARDED_FOR");   } else    if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) {     $ip = getenv("REMOTE_ADDR");    } else     if (isset ($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown")) {      $ip = $_SERVER['REMOTE_ADDR'];     } else {      $ip = "unknown";     }  return ($ip); }}?>